Velocity (left) and magnetic field (right) profiles for all fitted strips of a galaxy. From top to bottom panel: NGC 891, NGC 4157, NGC 4631. The extent of the galactic disk (estimated via the scale height of the HBA disk components (Table 6) is indicated with a black bar in the velocity profile plots. Dashed lines represent strips pointing downward, solid lines represent upward strips. Lines are best-fitting models and shaded areas indicate one-σ uncertainties. Escape velocities are computed for the central strip of each galaxy via Eq. (15), assuming a truncated dark matter halo size of 30 kpc.